discoveryf4: add telemetry option to main port
discoveryf4: removed duplicate defines in FreeRTOSConfig.h
discoveryf4: removed total heap size in FreeRTOSConfig.h
discoveryf4: set configCPU_CLOCK_HZ to SYSCLK_FREQ in FreeRTOSConfig.h
Merge pull request #677 from lilvinz/discoveryf4

discoveryf4: add telemetry option to main port